My printer stopped working with my PC using Windows11. The only difference that I found was that the MAC address on the printer is different than the MAC address on the Network Config. Page and I do not know how to fix it. Also under network diagnostics 2-1 there is a problem in the settings/environment. 2-2 result code c-0, c-7, c-9. All three pieces: The mentioned PC, the Laptop(Windows 11), and my android phone are all not connected to the TR8520 printer.
The real time feedback of a live technical support call would be very beneficial in this case.
I recommend reaching out to Canon support for this issue. You will need to register your Canon gear HERE to access additional support options.
We look forward to hearing from you.